Best AI Prompt Generators in 2026
Updated
In short: Vellum is ranked #1 of 30 as of 8 October 2026, ahead of PromptWizard and Promptitude. The best-ranked option with a free plan is PromptWizard. The lowest first paid tier on this page is VantagePrompt at $3/mo.
Writing prompts for AI models can involve drafting, refining, testing, and organizing reusable versions. Compared on model support and optimization mode, these tools also vary in prompt testing, prompt variables, and template limits. API access and team collaboration may matter when prompts need to fit into a broader workflow; free plans and paid-from prices add cost context. Vellum, PromptWizard, and Promptitude are among the options to compare. Consider which models you use, whether you need to test prompts, and how much shared work or reuse your process calls for.
30 AI prompt generators ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
30ranked
17free plans on this page
$3/molowest paid tier
8 Oct 2026last checked
Input list AI Prompt Generators 25 channels on this page · 120 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromModel supportOptimization modePrompt variablesPrompt testingTeam collaborationAPI access Spec sheet Score
01 Vellum Free planYesPaid from$30/moModel supportnot statedOptimization modenot statedPrompt variablesnot statedPrompt testingnot statedTeam collaborationnot statedAPI accessYes 3/8spec lines stated 7.6
02 PromptWizard Free planYesPaid fromnot statedModel supportmultipleOptimization modeautomatedPrompt variablesnot statedPrompt testingYesTeam collaborationnot statedAPI accessYes 5/8spec lines stated 7.4
03 Promptitude Free planYesPaid from$39/moModel supportmultipleOptimization modeassistedPrompt variablesYesPrompt testingYesTeam collaborationYesAPI accessYes 8/8spec lines stated 7.3
04 Google Cloud Agent Evaluation Free plannot statedPaid fromnot statedModel supportcustomOptimization modeautomatedPrompt variablesnot statedPrompt testingYesTeam collaborationnot statedAPI accessYes 4/8spec lines stated 7.2
05 Agenta Free planYesPaid from$29/moModel supportnot statedOptimization modenot statedPrompt variablesnot statedPrompt testingYesTeam collaborationnot statedAPI accessnot stated 3/8spec lines stated 7.0
06 OpenPrompt Free planYesPaid fromnot statedModel supportmultipleOptimization modeassistedPrompt variablesYesPrompt testingnot statedTeam collaborationnot statedAPI accessnot stated 4/8spec lines stated 7.0
07 Promptotype Free planYesPaid from$6/moModel supportmultipleOptimization modeassistedPrompt variablesYesPrompt testingYesTeam collaborationYesAPI accessnot stated 7/8spec lines stated 7.0
08 VantagePrompt Free planYesPaid from$3/moModel supportmultipleOptimization modeautomatedPrompt variablesYesPrompt testingYesTeam collaborationYesAPI accessnot stated 7/8spec lines stated 7.0
09 Latitude Free planYesPaid from$99/moModel supportmultipleOptimization modenot statedPrompt variablesnot statedPrompt testingYesTeam collaborationYesAPI accessYes 6/8spec lines stated 6.9
10 Prompt Engine Free planYesPaid fromnot statedModel supportmultipleOptimization modeassistedPrompt variablesYesPrompt testingYesTeam collaborationnot statedAPI accessnot stated 5/8spec lines stated 6.9
11 PromptForge Free planYesPaid fromnot statedModel supportmultipleOptimization modenot statedPrompt variablesnot statedPrompt testingYesTeam collaborationYesAPI accessYes 5/8spec lines stated 6.9
12 Promptic Free planYesPaid fromnot statedModel supportmultipleOptimization modeautomatedPrompt variablesYesPrompt testingYesTeam collaborationYesAPI accessYes 7/8spec lines stated 6.9
13 PromptLayer Free planYesPaid from$49/moModel supportnot statedOptimization modenot statedPrompt variablesnot statedPrompt testingYesTeam collaborationnot statedAPI accessnot stated 3/8spec lines stated 6.9
14 MLflow Prompt Optimization Free planYesPaid fromnot statedModel supportmultipleOptimization modeautomatedPrompt variablesYesPrompt testingYesTeam collaborationnot statedAPI accessYes 6/8spec lines stated 6.8
15 PromptEval Free planYesPaid from$9/moModel supportsingleOptimization modeassistedPrompt variablesnot statedPrompt testingYesTeam collaborationYesAPI accessYes 7/8spec lines stated 6.8
16 ProofHound Free planYesPaid fromnot statedModel supportnot statedOptimization modenot statedPrompt variablesnot statedPrompt testingYesTeam collaborationnot statedAPI accessnot stated 2/8spec lines stated 6.8
17 PromptPerfect Free planYesPaid fromnot statedModel supportmultipleOptimization modeautomatedPrompt variablesnot statedPrompt testingnot statedTeam collaborationnot statedAPI accessYes 4/8spec lines stated 6.7
18 TextGrad Free planYesPaid fromnot statedModel supportmultipleOptimization modeautomatedPrompt variablesYesPrompt testingYesTeam collaborationnot statedAPI accessYes 6/8spec lines stated 6.6
19 Amazon Nova ReelAmazon Web Services Free plannot statedPaid fromnot statedModel supportmultipleOptimization modeautomatedPrompt variablesYesPrompt testingYesTeam collaborationYesAPI accessYes 6/8spec lines stated 6.4
20 ChainForge Free plannot statedPaid fromnot statedModel supportcustomOptimization modemanualPrompt variablesYesPrompt testingYesTeam collaborationnot statedAPI accessNo 5/8spec lines stated 6.3
21 Microsoft Foundry Prompt Optimizer Free plannot statedPaid fromnot statedModel supportnot statedOptimization modeautomatedPrompt variablesnot statedPrompt testingnot statedTeam collaborationnot statedAPI accessnot stated 1/8spec lines stated 6.3
22 GEPAzilla Free plannot statedPaid fromnot statedModel supportmultipleOptimization modeautomatedPrompt variablesnot statedPrompt testingYesTeam collaborationnot statedAPI accessnot stated 3/8spec lines stated 6.2
23 GEPA Free plannot statedPaid fromnot statedModel supportmultipleOptimization modeautomatedPrompt variablesnot statedPrompt testingYesTeam collaborationnot statedAPI accessYes 4/8spec lines stated 6.1
24 Pythia Free plannot statedPaid fromnot statedModel supportcustomOptimization modeautomatedPrompt variablesnot statedPrompt testingYesTeam collaborationnot statedAPI accessnot stated 3/8spec lines stated 6.1
25 Amazon Bedrock Prompt Management Free plannot statedPaid fromnot statedModel supportmultipleOptimization modeautomatedPrompt variablesYesPrompt testingYesTeam collaborationYesAPI accessYes 6/8spec lines stated 5.9
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Model support | Optimization mode |
|---|---|---|---|---|---|---|---|---|
| 1 | Vellum | 7.6 | Free plan | $30/mo | Yes | 30 /mo | — | — |
| 2 | PromptWizard | 7.4 | Free plan | Free | Yes | — | multiple | automated |
| 3 | Promptitude | 7.3 | Free plan | $39/mo | Yes | 39 /mo | multiple | assisted |
| 4 | Google Cloud Agent Evaluation | 7.2 | No | — | — | — | custom | automated |
| 5 | Agenta | 7.0 | Free plan | $29/mo | Yes | 29 /mo | — | — |
| 6 | OpenPrompt | 7.0 | Free plan | Free | Yes | — | multiple | assisted |
| 7 | Promptotype | 7.0 | Free plan | $6/mo | Yes | 6 /mo | multiple | assisted |
| 8 | VantagePrompt | 7.0 | Free plan | $3/mo | Yes | 3 /mo | multiple | automated |
| 9 | Latitude | 6.9 | Free plan | $99/mo | Yes | 99 /mo | multiple | — |
| 10 | Prompt Engine | 6.9 | Free plan | $4.99/mo | Yes | — | multiple | assisted |
| 11 | PromptForge | 6.9 | Free plan | $29/mo | Yes | — | multiple | — |
| 12 | Promptic | 6.9 | Free plan | €149/mo | Yes | — | multiple | automated |
| 13 | PromptLayer | 6.9 | Free plan | $49/mo | Yes | 49 /mo | — | — |
| 14 | MLflow Prompt Optimization | 6.8 | Free plan | Free | Yes | — | multiple | automated |
| 15 | PromptEval | 6.8 | Free plan | $9/mo | Yes | 9 /mo | single | assisted |
| 16 | ProofHound | 6.8 | Free plan | $29/mo | Yes | — | — | — |
| 17 | PromptPerfect | 6.7 | Free plan | Free | Yes | — | multiple | automated |
| 18 | TextGrad | 6.6 | No | — | Yes | — | multiple | automated |
| 19 | Amazon Nova Reel | 6.4 | No | — | — | — | multiple | automated |
| 20 | ChainForge | 6.3 | Free plan | Free | — | — | custom | manual |
| 21 | Microsoft Foundry Prompt Optimizer | 6.3 | No | — | — | — | — | automated |
| 22 | GEPAzilla | 6.2 | No | — | — | — | multiple | automated |
| 23 | GEPA | 6.1 | No | — | — | — | multiple | automated |
| 24 | Pythia | 6.1 | No | — | — | — | custom | automated |
| 25 | Amazon Bedrock Prompt Management | 5.9 | No | — | — | — | multiple | automated |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI prompt generator is ranked first on Specifiction?
Vellum is ranked #1 of 30 with a score of 7.6. PromptWizard is second and Promptitude third.
How many of these have a free plan?
17 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, VantagePrompt has the lowest first paid tier we found: $3/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.